671. In all periods of the language

In all periods of the language, from the roots sthāstand, pādrink, and ghrāsmell, are made the presents tíṣṭhāmi, píbāmi (with irregular sonantizing of the second p), andjíghrāmi — which then are inflected not like mímāmi, but like bhávāmi, as if from the present-stems tíṣṭha, píba, jíghra.